Power plants today are plagued with aging balance-of-plant heat exchangers, particularly lube oil coolers and hydrogen coolers that have reached the end of their useful lives. Refurbishment of these coolers requires that Plant Engineers and Maintenance Personnel carefully evaluate the extent of the damage, research available solutions and develop a plan of action. A better understanding of what must be considered and what options are available will allow them to perform these tasks more effectively. This paper illustrates the challenges, considerations and options to effectively refurbish lube oil and hydrogen coolers as well as refurbishment activities, specialized tools, techniques and procedures. Also discussed are examples of common problems encountered and their solutions.

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